I have a light and heavy air set of sheets, both of which are continuous with a short strop that attaches to the clew. The light ones are 4mm and the heavy are 5/16" non-tapered spectra core/polypro cover. Not sure what you mean by "single line strop style for the tack attachment"...

is it better to use a medium size diameter line for the spin sheet that doesn't weigh a lot or is it better to use very thin sheets in light air. I have had some problems with the thin lines getting caught in the blocks. Are there any solutions to this problem? Are there any types of sheets that work better?